Spectrum-sharing DF generalized order relay selection with interference and multiple primary users using orthogonal spectrums

Salhab, Anas M.; Zummo, Salam A.

doi:10.1016/j.phycom.2016.10.001

Cited by 5 publications

(3 citation statements)

References 37 publications

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“…This enhancement in the performance comes through the coding gain G c . Compared to results in [20], we can see here that the presence of RIS at the source reverses the effect of interference at the relays and destination on the system performance, where the interference at the destination becomes more impactful. In addition, we can see that utilizing RIS mitigates the impact of interference at the relays.…”

Section: Numerical Resultsmentioning

confidence: 45%

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Impact of Interference on the Performance of RIS-Assisted Source DF Relaying Networks

Salim¹,

Samuh²,

Salhab³

2020

Preprint

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This letter investigates the impact of co-channel interference (CCI) on the performance of a decode-and-forward (DF) relaying network with a reconfigurable intelligent surface (RIS)-assisted source. We consider one source, multiple DF relays, and one destination with CCI at both the relays and destination. We derive closed-form accurate approximations for the system outage probability assuming Rayleigh fading channels.In addition, we study the system performance at the high signalto-noise ratio (SNR) regime, where closed-form expressions are derived for the asymptotic outage probability, diversity order, and the coding gain. The results show that the number of reflecting elements N at the source has a small effect on the coding gain of the system and not on the diversity order. Furthermore, findings illustrate that the number of relays K is affecting the diversity order and is more impactful on the performance than N . Finally, results show that utilizing RIS at the source node mitigates the interference effect at the relay nodes.

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Section: Numerical Resultsmentioning

confidence: 45%

“…The RV Z is equal to Z = X + 1, where X is the interference at the destination, which has the following PDF [20] f…”

Section: Appendix B Proof Of Theoremmentioning

confidence: 99%

Impact of Interference on the Performance of RIS-Assisted Source DF Relaying Networks

Salim¹,

Samuh²,

Salhab³

2020

Preprint

Self Cite

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show abstract

“…Hence, the RV Z, which equal to Z = X + 1, where X is the interference at the destination has the following PDF [14] f…”

Section: Appendix a Proof Of Theoremmentioning

confidence: 99%

Interference Impact on Decode-and-Forward Relay Networks with RIS-Assisted Source and Relays

Salhab,

Yang

2020

Preprint

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In this letter, we consider the scenario of decodeand-forward relay network with reconfigurable intelligent surface (RIS)-assisted source and relays in the presence of interference. We derive approximate closed-form expression for the system outage probability assuming Rayleigh fading channels and opportunistic relaying scheme. In addition, we study the system behavior at the high signal-to-noise ratio (SNR) regime, where the diversity order and coding gain are obtained and analyzed. The results show that the system can achieve a diversity order of G d = min(N1, N2)K, where N1 and N2 are the numbers of reflecting elements at the source and relays, respectively, and K is the number of relays. In addition, findings illustrate that for the same diversity order, utilizing one relay with multiple reflecting elements gives better performance than utilizing multiple relays with a single reflecting element. Furthermore, findings illustrate that the interference at the destination is more severe on the system performance than the interference at the relays. Therefore, under the same interference powers and for a fixed number of relays K, results show that the case where the first hop is dominating the performance N1 < N2 gives better results in terms of coding gain than the case where N2 < N1.

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A Study of Interference Effect on the Performance of RIS-Equipped Source and Relays DF Relay Network

Salhab

2024

Arab J Sci Eng

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Spectrum-sharing DF generalized order relay selection with interference and multiple primary users using orthogonal spectrums

Cited by 5 publications

References 37 publications

Impact of Interference on the Performance of RIS-Assisted Source DF Relaying Networks

Impact of Interference on the Performance of RIS-Assisted Source DF Relaying Networks

Interference Impact on Decode-and-Forward Relay Networks with RIS-Assisted Source and Relays

A Study of Interference Effect on the Performance of RIS-Equipped Source and Relays DF Relay Network

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